AI invoice automation from Google Sheets

Add a row to your Invoices sheet and it turns into a PDF invoice, emailed to your client with a friendly AI-written note. The sheet is then marked as Sent.

Finance & billingEmail marketingn8nGoogle SheetsGmailOpenAIGoogle DocsGoogle Drive
How the workflow runsLive

See it in action

This is what it looks like when the workflow runs. The example replays on a loop.

InvoicesGoogle Sheets
InvoiceClientTotalStatus
INV-1024Riya Mehta₹29,500Pending
INV-1025Arjun Rao₹18,880Pending
INV-1026Neha Kapoor₹47,200Pending
INV-1027Vikram Shah₹11,800Pending
0 of 4 invoices sent today
Clone LabsInvoice INV-1024 from Clone Labs

Hi Riya,

PDFInvoice-INV-1024.pdfTotal ₹29,500

How it works

  1. 1
    Step 1Add a row to your Invoices Google Sheet with the client’s details, the work, the amounts and Status set to Pending.
  2. 2
    Step 2The workflow checks the sheet every minute and picks up every invoice that is still Pending, so nothing is sent twice.
  3. 3
    Step 3AI writes a short, friendly email for each client with the invoice number, the total and the due date.
  4. 4
    Step 4It copies your Google Docs invoice design and fills in the details, like the client name, items, GST and total. Your original design stays untouched.
  5. 5
    Step 5The filled invoice is saved as a PDF and emailed to the client from your Gmail.
  6. 6
    Step 6The row is updated to Sent with today’s date. Change it to Paid when the money comes in.

What you get

Invoices from a spreadsheetYour team only fills in a Google Sheet. No invoicing software to learn.
Your own invoice designUses your Google Docs template, with your logo, GSTIN and bank details.
GST readySubtotal, GST and total are worked out in the sheet and printed on the invoice.
A personal email every timeAI writes a fresh, polite note for each client instead of a cold template.
Never sent twiceOnly Pending rows are sent, and each one is marked Sent straight after.
A clear recordYour sheet becomes the log of what was billed, when it was sent and what’s paid.

Before you go live: Change “Clone Labs” in the email subject and the AI prompt to your own business name, and send your first invoice to your own email address to check everything looks right.

What you’ll need

n8n accountCloud or self-hostedRequired
Google accountSheets, Docs, Drive and Gmail, connected in n8nRequired
OpenAI API keyFor the emails; a fraction of a cent per invoiceRequired
Invoices sheet and invoice designBoth are included in this downloadRequired

Want us to set it up for you?

If you'd rather not connect accounts and API keys yourself, we can install this template, adapt it to your business and train your team on it.

Book a call about this workflow